Prevented compiler warning on uninitialized end
Minor checks to prevent NULL-pointer exceptions
Const correctness added for asn1write functions
OID functionality moved to a separate module.

A new OID module has been created that contains the main OID searching
functionality based on type-dependent arrays. A base type is used to
contain the basic values (oid_descriptor_t) and that type is extended to
contain type specific information (like a pk_alg_t).

As a result the rsa sign and verify function prototypes have changed. They
now expect a md_type_t identifier instead of the removed RSA_SIG_XXX
defines.

All OID definitions have been moved to oid.h
All OID matching code is in the OID module.

The RSA PKCS#1 functions cleaned up as a result and adapted to use the
MD layer.

The SSL layer cleanup up as a result and adapted to use the MD layer.

The X509 parser cleaned up and matches OIDs in certificates with new
module and adapted to use the MD layer.

The X509 writer cleaned up and adapted to use the MD layer.

Apps and tests modified accordingly
Indication of x509_get_numeric_string() deprecation
Blowfish has default of 128-bit keysize in cipher layer
Added Camellia ECDHE-based CBC ciphersuites

Added TLS-ECDHE-RSA-WITH-CAMELLIA-128-CBC-SHA256 and
TLS-ECDHE-RSA-WITH-CAMELLIA-256-CBC-SHA384
Fixed compiler warning for possible uninitialized ret
Removed duplicate value from compat.sh ciphersuite list
Enable PBKDF2 by default
Split up largest test suite data files into smaller chunks